i am sorry if i am posting in wrong section i am facing the following error pllease help me out

i got a 4S-16gb with ios 7.0.4 and using a JV sim with it. my phone is not deductable by windows 7, whenever i pluged the data cable to USB port is just show me my phone as charging

i tried these

1. checked iTunes and tried all the remedies i.e installing and reinstalling the itune and its component

2. starting and closing the APPLE MOBILE DEVICE service

3. edit registry

4. Install a new windows both xp & win7

but all in vain, windows DEVICE MANAGER is not showing iphone usb driver



pleaseeeee help me